Formerly About Advanced Micro Devices Message Board

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Politics : Formerly About Advanced Micro Devices

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To: neolib who wrote (246320)	8/17/2005 1:12:43 AM
From: tejek	Read Replies (1) of 1572025

So, you believe...Ontogeny recapitulates phylogeny? Not quite the current view, but it was actually a useful step along the way. The current field of developmental biology, which looks at how embryos develop is showing indeed that common genes control the development of different structures across a wide range of distantly related species. It's not that the embryo is actually going through a miniature version of the adult bodies of all the ancestors in succession as it develops. Rather embryos of related species (even say humans & fish) go through very similar stages early on, hence the common visual phylogeny. When you say related species......do you mean that all mammals go through similar stages; all birds go through similar stages; all insects go through similar stages and so on......no matter whether the insect is a tarantula or a lady bug?

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